Using different techniques of steganography deducting null cipher in plain text
by Allah Ditta; Cai Yongquan; Khurram Gulzar Rana; Kong Shanshan; Muhammad Azeem; Tahadray Jean
International Journal of Wireless and Mobile Computing (IJWMC), Vol. 9, No. 4, 2015

Abstract: Encoding a message in plain text is an ancient art. Using null cipher (NC) is a great challenge because it requires extensive human efforts and intelligence. In this study, we propose a mechanism which can detect the existence of NC steganography in text without human involvement. We propose a statistical approach based on finding the probability of a ST to generate meaningful words and average word length. A threshhold value (THV) is defined to distinguish the normal data from unusual statistical data. On the basis of the probability and AWL each ST is assigned a risk factor value. Texts exceeding THV will be marked as infected and the remaining as clean text.

Online publication date: Sun, 03-Jan-2016

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